Fixing seat and camera module
By designing a stepped vent structure in the camera module, the problem that the pores of the lens assembly are easily bonded to debris is solved, and the combination of low-cost, low-cost processing and high imaging quality is achieved.
Patent Information
- Application Number
- CN202420828868.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-19
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-04-19
AI Technical Summary
In the existing camera modules, the pores of the lens assembly are easily bonded to external debris, resulting in reduced imaging quality and higher processing difficulty and cost.
A fixed seat is designed, including a first air hole, a second air hole and a third air hole arranged coaxially. The inner diameter of the third air hole is larger than the first air hole, and the inner diameter of the second air hole gradually increases to form a stepped structure. Used to connect the inside and outside of the mounting holes, simplify machining difficulty and reduce costs while extending the movement path of external debris to avoid bonding.
It effectively avoids external debris entering the lens assembly, ensures consistent pressure inside and outside the mounting hole, reduces production costs, and improves imaging quality.
Smart Images
Figure CN222339496U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of imaging equipment, in particular to a fixing seat and a camera module. Background Art
[0002] In camera modules, the lens assembly typically incorporates a layer of glue to connect the components. Air holes are also typically placed in the lens mount that secures the lens assembly. This ensures uniform pressure inside and outside the mount, preventing the glue from cracking. However, external debris can adhere to the lens module through these air holes, degrading image quality. Utility Model Content
[0003] In view of the above, it is necessary to provide a fixing base and a camera module to prevent external debris from adhering to the lens module installed on the fixing base at a low cost.
[0004] The present invention provides a fixing base for fixing a lens assembly, the fixing base comprising:
[0005] The main body is provided with a mounting hole and a vent hole, the mounting hole passes through the main body and is used to install the lens assembly, the vent hole passes through the side wall of the mounting hole to connect the inside and outside of the mounting hole, the vent hole includes a first vent hole, a second vent hole and a third vent hole arranged coaxially, the first vent hole is connected to the mounting hole, the third vent hole is connected to the outside of the mounting hole, and the inner diameter of the third vent hole is larger than the inner diameter of the first vent hole, the two ends of the second vent hole are respectively connected to the first vent hole and the third vent hole, and the inner diameter of the second vent hole gradually increases from the first vent hole to the third vent hole.
[0006] In the aforementioned mounting base, the vent holes connect the inside and outside of the mounting hole, ensuring consistent pressure inside and outside the mounting hole. The vent holes are composed of a first vent hole, a second vent hole, and a third vent hole coaxially arranged. The inner diameter of the third vent hole is larger than that of the first vent hole, and the inner diameter of the second vent hole gradually increases from the first vent hole to the third vent hole. This simplifies the manufacturing difficulty of the vent holes and reduces the manufacturing cost of the mounting base. In addition, the first vent hole, the second vent hole, and the third vent hole form a stepped structure, which prevents external debris from entering the mounting hole, thereby preventing external debris from adhering to the lens assembly located in the mounting hole.
[0007] In some embodiments, the cross-sectional shapes of the first pore, the second pore, and the third pore are the same.
[0008] Therefore, the vent holes can be processed using processing tools with the same cross-section, which is beneficial to reducing the difficulty of processing the vent holes.
[0009] In some embodiments, the sidewall of the second pore is arranged in a straight line from the first pore to the third pore, and the angle between the sidewall of the second pore and the central axis of the second pore is α, and α satisfies the relationship: 10°≤α≤30°.
[0010] Therefore, by properly configuring the angle α, the second pore can be guaranteed to block external debris at a low cost. Specifically, if α is less than 10°, the rate of change in the inner diameter of the second pore from the third pore to the first pore is smaller than when α is greater than 10°, resulting in a smaller pressure difference in the airflow within the second pore, which is detrimental to the retention of debris in the airflow within the second pore. If α is greater than 30°, the machining range of the second pore is larger than when α is less than 30° at the same depth, increasing the cost.
[0011] In some embodiments, the depth of the first air hole is greater than the depth of the third air hole, and the depth of the first air hole is less than the depth of the second air hole.
[0012] Therefore, the depth of the third pore is smaller than the depth of the first pore and the depth of the second pore, which is beneficial to reducing the processing difficulty of the first pore and the second pore. The depth of the second pore is greater than the first pore and the third pore, which can extend the movement path of external debris entering the first pore, which is beneficial for external debris to stay in the second pore.
[0013] In some embodiments, the first pore and the third pore are both columnar structures, the second pore includes a first opening connected to the first pore and a second opening connected to the third pore, the inner diameter of the first opening is greater than or equal to the inner diameter of the first pore, and the inner diameter of the second opening is less than or equal to the inner diameter of the third pore.
[0014] Therefore, by setting the above structure, the processing technology of the vent hole can be simplified, which is beneficial to reducing the processing cost of the vent hole.
[0015] In some embodiments, the vent hole is provided at an end of the main body close to the image side of the lens assembly, and the mounting hole comprises:
[0016] a mounting groove, passing through the main body and used for mounting the lens assembly;
[0017] A avoidance groove is provided at one end of the main body close to the image side of the lens assembly and is connected with the vent hole and the mounting groove, and the avoidance groove is arranged around the mounting groove.
[0018] Therefore, the avoidance groove at one end of the main body can accommodate external components, which is beneficial to the installation of the fixing seat.
[0019] In some embodiments, the fixing base further comprises:
[0020] an extension body connected to an end of the main body close to the object side of the lens assembly and arranged along the circumference of the main body;
[0021] A plurality of bosses are arranged on a side of the extension body away from the vent hole and are spaced apart along the periphery of the extension body. Surfaces of the plurality of bosses away from the extension body are in the same plane.
[0022] Therefore, the provision of multiple bosses can improve the flatness of the external device after it is mounted on the fixing base.
[0023] In some embodiments, the fixing base further comprises:
[0024] A plurality of positioning bodies are arranged on a side of the extension body away from the vent hole and are spaced apart along the periphery of the extension body. The plurality of positioning bodies are used to position external components on the plurality of bosses.
[0025] Therefore, the accuracy of mounting the external components on the multiple bosses can be improved by using the multiple guide bodies.
[0026] In some embodiments, the fixing base further comprises:
[0027] The reinforcing body is arranged on a side of the extending body away from the plurality of bosses, and the reinforcing body is connected to the main body and the extending body respectively.
[0028] Therefore, the reinforcement body can improve the stability of the connection between the extension body and the main body.
[0029] The present invention also provides a camera module, including:
[0030] The fixing seat described in the above embodiment;
[0031] The lens assembly is installed in the installation hole.
[0032] In the aforementioned camera module, the vents connect the inside and outside of the mounting hole, ensuring consistent pressure inside and outside the mounting hole. The vents consist of a first, second, and third coaxially arranged vent. The inner diameter of the third vent is larger than that of the first vent, and the inner diameter of the second vent gradually increases from the first vent to the third vent. This simplifies the manufacturing of the vents and reduces the manufacturing cost of the camera module. Furthermore, the first, second, and third vents form a stepped structure that prevents external debris from entering the mounting hole, thereby preventing external debris from adhering to the lens assembly located within the mounting hole. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] Figure 1 This is a schematic structural diagram of a fixing seat according to an embodiment of the present utility model.
[0034] Figure 2 for Figure 1 The cross-sectional schematic diagram of the fixing seat along the II-II direction is shown.
[0035] Figure 3 for Figure 2 An enlarged schematic diagram of the fixing seat at position B is shown.
[0036] Figure 4 This is a schematic diagram of the exploded view of the camera module according to an embodiment of the present invention.
[0037] Description of main component symbols
[0038] Fixed seat 100
[0039] Main body 110
[0040] Mounting hole 110a
[0041] vent hole 110b
[0042] First air hole 110c
[0043] Second air hole 110d
[0044] The third air hole 110e
[0045] First opening 110f
[0046] Second opening 110g
[0047] Installation slot 110h
[0048] Avoidance slot 110k
[0049] Extension body 120
[0050] Boss 130
[0051] Positioning body 140
[0052] Reinforcement 150
[0053] Camera module 1000
[0054] Lens assembly 200 DETAILED DESCRIPTION
[0055] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.
[0056] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection or an indirect connection through an intermediate medium; it can be internal communication between two elements or an interaction between two elements. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0057] The following describes in detail various embodiments of the present invention in conjunction with the accompanying drawings.
[0058] See Figure 1 The embodiment of the present invention provides a fixing base 100 for fixing a lens assembly and preventing external debris from adhering to the lens module mounted on the fixing base 100 at a low cost. The external debris moves with the flow of external air and gradually moves downward under the action of its own gravity.
[0059] See Figure 1 and Figure 2 The fixing base 100 includes a main body 110. The main body 110 is provided with a mounting hole 110a and a vent hole 110b. The mounting hole 110a passes through the main body 110 and is used to mount the lens assembly. The vent hole 110b passes through the side wall of the mounting hole 110a to connect the inside and outside of the mounting hole 110a. The vent hole 110b includes a first vent hole 110c, a second vent hole 110d, and a third vent hole 110e coaxially arranged. The first vent hole 110c is connected to the mounting hole 110a, and the third vent hole 110e is connected to the outside of the mounting hole 110a. The inner diameter of the third vent hole 110e is larger than the inner diameter of the first vent hole 110c. The two ends of the second vent hole 110d are respectively connected to the first vent hole 110c and the third vent hole 110e, and the inner diameter of the second vent hole 110d gradually increases from the first vent hole 110c to the third vent hole 110e.
[0060] In the above-mentioned fixing base 100, the vent hole 110b connects the inside and outside of the mounting hole 110a, which can ensure that the pressure inside and outside the mounting hole 110a is consistent. The vent hole 110b is composed of a first vent hole 110c, a second vent hole 110d and a third vent hole 110e that are coaxially arranged. The inner diameter of the third vent hole 110e is larger than the inner diameter of the first vent hole 110c, and the inner diameter of the second vent hole 110d gradually increases from the first vent hole 110c to the third vent hole 110e, which is conducive to simplifying the processing difficulty of the vent hole 110b and reducing the production cost of the fixing base 100. In addition, the external air flow enters the mounting hole 110a after passing through the third air hole 110e, the second air hole 110d and the first air hole 110c in sequence. Since the first air hole 110c, the second air hole 110d and the third air hole 110e form a stepped structure, the air pressure of the external air flow increases when it enters the second air hole 110d from the third air hole 110e, and when it enters the first air hole 110c from the second air hole 110d. Under the action of the pressure difference and its own gravity, debris in the external air flow will fall into the third air hole 110e, the second air hole 110d and the first air hole 110c. Therefore, the vent hole 110b in the above-mentioned fixing base 100 can also prevent external debris from entering the mounting hole 110a, thereby preventing external debris from adhering to the lens assembly located in the mounting hole 110a.
[0061] See Figure 3 In some embodiments, the cross-sectional shapes of the first pore 110c, the second pore 110d, and the third pore 110e are the same. Specifically, the cross-sectional shapes can be linear, curved, or a combination of the linear and curved shapes.
[0062] Therefore, a processing tool with the same cross-section can be used to process the vent hole 110 b , which is helpful to reduce the difficulty of processing the vent hole 110 b .
[0063] In some embodiments, the sidewall of the second pore 110d is arranged in a straight line from the first pore 110c to the third pore 110e, and the angle α between the sidewall of the second pore 110d and the central axis of the second pore 110d satisfies the relationship: 10°≤α≤30°. α can be 10°, 15°, 20°, 25°, or 30°. Preferably, α is 15°.
[0064] Therefore, by properly configuring the angle α, the second air hole 110d can be guaranteed to block external debris at a low cost. Specifically, if α is less than 10°, the rate of change in the inner diameter of the second air hole 110d from the third air hole 110e to the first air hole 110c is smaller than if α is greater than 10°. This results in a smaller pressure difference in the airflow within the second air hole 110d, which is detrimental to the retention of debris in the airflow within the second air hole 110d. If α is greater than 30°, the processing area of the second air hole 110d is larger than if α is less than 30° at the same depth, increasing the cost.
[0065] In some embodiments, the depth of the first pore 110c is greater than the depth of the third pore 110e, and the depth of the first pore 110c is less than the depth of the second pore 110d. The depth of the first pore 110c refers to the length of the first pore 110c from the second pore 110d to the third pore 110e, the depth of the second pore 110d refers to the length of the second pore 110d from the first pore 110c to the third pore 110e, and the depth of the third pore 110e refers to the length of the third pore 110e from the first pore 110c to the second pore 110d.
[0066] Therefore, the depth of the third air hole 110e is smaller than the depth of the first air hole 110c and the depth of the second air hole 110d, which is beneficial to reducing the processing difficulty of the first air hole 110c and the second air hole 110d. The depth of the second air hole 110d is greater than the first air hole 110c and the third air hole 110e, which can extend the movement path of external debris entering the first air hole 110c, which is beneficial for external debris to stay in the second air hole 110d.
[0067] See Figure 3 In some embodiments, the first pore 110c and the third pore 110e are both columnar structures, the second pore 110d includes a first opening 110f connected to the first pore 110c and a second opening 110g connected to the third pore 110e, the inner diameter of the first opening 110f is greater than or equal to the inner diameter of the first pore 110c, and the inner diameter of the second opening 110g is less than or equal to the inner diameter of the third pore 110e.
[0068] In this embodiment, the inner diameter of the first opening 110f is equal to the inner diameter of the first air hole 110c, and the inner diameter of the second opening 110g is smaller than the inner diameter of the third air hole 110e. In other embodiments, the inner diameter of the first opening 110f may be larger than the inner diameter of the first air hole 110c, and the inner diameter of the second opening 110g may be equal to the inner diameter of the third air hole 110e.
[0069] Therefore, by setting the above structure, the processing technology of the vent hole 110b can be simplified, which is beneficial to reducing the processing cost of the vent hole 110b.
[0070] See Figure 2 In some embodiments, the vent 110b is provided at one end of the main body 110 near the image side of the lens assembly, and the mounting hole 110a includes a mounting groove 110h and a avoidance groove 110k. The mounting groove 110h runs through the main body 110 and is used to mount the lens assembly. The avoidance groove 110k is provided at one end of the main body 110 near the image side of the lens assembly and connects the vent 110b and the mounting groove 110h. The avoidance groove 110k is provided around the mounting groove 110h so that the lens assembly located in the mounting groove 110h is spaced apart from the groove wall of the avoidance groove 110k. In this embodiment, the mounting groove 110h is a columnar structure, and the avoidance groove 110k is an annular structure.
[0071] Therefore, the avoidance groove 110 k located at one end of the main body 110 can accommodate external components, which is beneficial to the installation of the fixing base 100.
[0072] See Figure 1 In some embodiments, the fixing base 100 further includes an extension body 120 and a plurality of bosses 130. The extension body 120 is connected to one end of the main body 110 close to the object side of the lens assembly and is arranged along the circumference of the main body 110, that is, the extension body 120 and the vent hole 110b are respectively located at opposite ends of the main body 110, and the plurality of bosses 130 are all provided on a side of the extension body 120 away from the vent hole 110b and are spaced apart along the circumference of the extension body 120, and the surfaces of the plurality of bosses 130 facing away from the extension body 120 are in the same plane.
[0073] In this embodiment, there are three bosses 130, and the three bosses 130 are symmetrically arranged with the mounting hole 110a as the center. In other embodiments, there may be four or more bosses 130.
[0074] Therefore, the provision of the plurality of bosses 130 can improve the flatness of the external device after being mounted on the fixing base 100 .
[0075] See Figure 1 In some embodiments, the fixing base 100 further includes a plurality of positioning bodies 140 . The plurality of positioning bodies 140 are all disposed on a side of the extension body 120 away from the vent hole 110 b and are spaced apart along the periphery of the extension body 120 . The plurality of positioning bodies 140 are used to position external components on the plurality of bosses 130 .
[0076] In this embodiment, there are two guide bodies 140, and each guide body 140 is disposed on one boss 130. In other embodiments, there may be three or more guide bodies 140.
[0077] Therefore, the accuracy of mounting the external components on the plurality of bosses 130 can be improved by using the plurality of guide bodies 140 .
[0078] See Figure 1 In some embodiments, the fixing base 100 further includes a reinforcement 150. The reinforcement 150 is disposed on a side of the extension 120 facing away from the plurality of bosses 130, and the reinforcement 150 is connected to the main body 110 and the extension 120, respectively. In this embodiment, there are multiple reinforcements 150, and the multiple reinforcements 150 are spaced apart along the periphery of the main body 110.
[0079] Therefore, the reinforcing body 150 can improve the stability of the connection between the extension body 120 and the main body 110 .
[0080] See Figure 4 The embodiment of the present invention further provides a camera module 1000, comprising a lens assembly 200 and the fixing seat 100 of the above embodiment, wherein the lens assembly 200 is installed in the mounting hole 110a.
[0081] In the aforementioned camera module 1000, vent 110b connects the inside and outside of mounting hole 110a, ensuring consistent pressure inside and outside mounting hole 110a. Vent 110b comprises a coaxially arranged first vent 110c, a second vent 110d, and a third vent 110e. The inner diameter of third vent 110e is larger than that of first vent 110c, and the inner diameter of second vent 110d gradually increases from first vent 110c to third vent 110e. This simplifies the processing of vent 110b and reduces the manufacturing cost of camera module 1000. Furthermore, the stepped structure formed by first vent 110c, second vent 110d, and third vent 110e prevents external debris from entering mounting hole 110a, thereby preventing external debris from adhering to lens assembly 200 located within mounting hole 110a.
[0082] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be encompassed within the present invention.
[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.
Claims
1. A fixing seat for fixing a lens assembly, characterized in that: The fixing seat comprises: A main body is provided with a mounting hole and a vent hole, wherein the mounting hole passes through the main body and is used to mount a lens assembly, and the vent hole passes through a side wall of the mounting hole to connect the inside and outside of the mounting hole, and the vent hole comprises a first vent hole, a second vent hole and a third vent hole which are coaxially arranged, wherein the first vent hole is connected to the mounting hole, the third vent hole is connected to the outside of the mounting hole, and the inner diameter of the third vent hole is larger than the inner diameter of the first vent hole, the two ends of the second vent hole are respectively connected to the first vent hole and the third vent hole, and the inner diameter of the second vent hole gradually increases from the first vent hole to the third vent hole.
2. The fixing seat according to claim 1, characterized in that: The first pore, the second pore, and the third pore have the same cross-sectional shape.
3. The fixing seat according to claim 1, characterized in that: The side wall of the second air hole is arranged in a straight line from the first air hole to the third air hole, and the angle between the side wall of the second air hole and the central axis of the second air hole is α, and α satisfies the relationship: 10°≤α≤30°.
4. The fixing seat according to claim 1, characterized in that: The depth of the first air hole is greater than the depth of the third air hole, and the depth of the first air hole is less than the depth of the second air hole.
5. The fixing seat according to claim 1, characterized in that: The first pore and the third pore are both columnar structures, the second pore includes a first opening connected to the first pore and a second opening connected to the third pore, the inner diameter of the first opening is greater than or equal to the inner diameter of the first pore, and the inner diameter of the second opening is less than or equal to the inner diameter of the third pore.
6. The fixing seat according to claim 1, characterized in that: The vent hole is provided at one end of the main body close to the image side of the lens assembly, and the mounting hole comprises: A mounting groove, which passes through the main body and is used for mounting the lens assembly; The avoidance groove is arranged at one end of the main body close to the image side of the lens assembly and is connected with the vent hole and the mounting groove, and the avoidance groove is arranged around the mounting groove.
7. The fixing seat according to claim 1, characterized in that: The fixing seat also includes: An extension body connected to one end of the main body close to the object side of the lens assembly and arranged along the circumference of the main body; A plurality of bosses are arranged on a side of the extension body away from the vent hole and are spaced apart along the periphery of the extension body. The surfaces of the plurality of bosses away from the extension body are in the same plane.
8. The fixing seat according to claim 7, characterized in that: The fixing seat also includes: A plurality of positioning bodies are arranged on a side of the extension body away from the vent hole and are arranged at intervals along the periphery of the extension body. The plurality of positioning bodies are used to position external components on the plurality of bosses.
9. The fixing seat according to claim 7, characterized in that: The fixing seat also includes: The reinforcing body is arranged on a side of the extending body away from the plurality of bosses, and the reinforcing body is connected to the main body and the extending body respectively.
10. A camera module, characterized in that: include: A fixing seat as claimed in any one of claims 1 to 9; The lens assembly is installed in the installation hole.